Improved water-wheel



, NITED STATES PATENT OFFICE.

l WILBUR M. DAVIS, OF CARMEL, MAINE.

IMPROVED WATER-WH EEL.

Specification forming part of Letters Patent No. 15,175, dated June 24, 1856.

Improvement in Water-IVheels; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification.

Figure l is a perspective view of the wheel and its appendages. Fig. 2 is a perspective view of the cone and oats when separated from the shell. Fig. 3 is a view of a horizontal section between the'scroll and scroll-plate,

showing a section of the wheel and waterpitches and of the inside of the scroll-plate. Fig. 4 is a perspective View of a single float.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

In Fig. 1, A is the spout to let the water into the wheel. B is the scroll. C is a concave scroll-plate, more fully shown at H, Fig. 3, and D is a shell or curb.

In Fig. 2, E is a cone, and F floats.

In Fig. 3, H is a scroll-plate, G Water-pitches, and F ioats.

Fig. 4t is a float.

The operation of my wheel is as follows: The water comes in through the spoutA, Fig. 1, passes round between the scroll B and scrollplate, (marked C in Fig. l and H in Fig. 3,) and through the pitches G, striking the iloats F in such manner as to secure the full direct action or impulse of the water. The water then passes spirally round the cone, following the combined curvature of the cone and oat, giving its full reacting force as it passes out at the bottom of the wheel, thus combining the full force of the direct action and reaction of the water upon the wheel. The water-pitches Gr and the floats F are placed at such angle relatively to each other and to motion of the wheel as to secure the most beneficial effect of the direct action of the water upon the upper part of the oat. To

get the full force of the reaction of the wat-er and to avoid the friction arising from the centrifugal action of the water, I build my wheel larger at the bottom. The shape of the cone and Iioats, the cone being larger at the bottom and the iioats set spirally upon the cone and becoming narrower toward the bottom, accomodates the tendency of the water to leave the center of the wh'eel, and thus preserves upon the wheelthe full weight and pressure of the water and retains the full reaction power of the water.

What I claim as my invention, and desire to secure by Letters Patent, is

The combination ot' the scroll-plate and water-pitches to secure more beneficially the direct action of the water, in combination with the cone spreading the bottom of the wheel, with a curved float narrowed at the bottom and set spirally upon the cone, which, with the scroll-plate and water-pitches, secures the full direct action and reaction force of the water upon the wheel, as set forth in fullin my specification.

VILBUR M. DAVIS.

Witnesses:

JAS. S. CLAEY, W. CRossFIELD. 

